シンプルなアプリを開発しています。ホーム画面が完成しました。方向が2回を超えて変化する場合、エラーがスローされ、アプリケーションは強制的に閉じられます。
public class PasswordActivity extends Activity implements OnClickListener {
Button login;
Button forgot;
Button register;
private static final String PREFERENCES = "prefs";
private static final String PREFERENCES_NAME = "pref_name";
SharedPreferences settings;
private Cursor c;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
login=(Button)findViewById(R.id.login_login);
login.setOnClickListener(this);
register=(Button)findViewById(R.id.login_register);
register.setOnClickListener(this);
}
public void onClick(View v) {
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.Android.com/apk/res/Android"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="vertical"
Android:background="@drawable/listpic"
>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingTop="5dp"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<TextView
Android:layout_width="fill_parent"
Android:layout_weight="0.75"
Android:layout_height="wrap_content"
Android:text="@string/login_user_name"
Android:textStyle="bold"
/>
<EditText
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:layout_weight="0.25"
Android:id="@+id/login_user_name"
Android:inputType="text"
/>
</LinearLayout>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<TextView
Android:layout_width="fill_parent"
Android:layout_weight="0.75"
Android:layout_height="wrap_content"
Android:text="@string/login_password"
Android:textStyle="bold"
/>
<EditText
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:layout_weight="0.25"
Android:inputType="textPassword"
Android:id="@+id/login_password"
/>
</LinearLayout>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<Button
style="@style/left_button"
Android:text="@string/login_submit"
Android:id="@+id/login_login"
/>
<Button
style="@style/right_button"
Android:id="@+id/login_register"
Android:text="@string/register"
/>
</LinearLayout>
</LinearLayout>
10-21 12:05:59.982: D/dalvikvm(622): GC_EXTERNAL_ALLOC freed 774 objects / 56240 bytes in 61ms
10-21 12:06:15.031: D/dalvikvm(622): GC_EXTERNAL_ALLOC freed 737 objects / 30992 bytes in 59ms
10-21 12:06:18.022: E/dalvikvm-heap(622): 7596000-byte external allocation too large for this process.
10-21 12:06:18.022: E/GraphicsJNI(622): VM won't let us allocate 7596000 bytes
10-21 12:06:18.043: D/AndroidRuntime(622): Shutting down VM
10-21 12:06:18.043: W/dalvikvm(622): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-21 12:06:18.092: E/AndroidRuntime(622): FATAL EXCEPTION: main
10-21 12:06:18.092: E/AndroidRuntime(622): Java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ravi.password/com.ravi.password.PasswordActivity}: Android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.performLaunchActivity(ActivityThread.Java:2663)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.main(ActivityThread.Java:4627)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Method.invokeNative(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Method.invoke(Method.Java:521)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.Java:868)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.os.ZygoteInit.main(ZygoteInit.Java:626)
10-21 12:06:18.092: E/AndroidRuntime(622): at dalvik.system.NativeStart.main(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createView(LayoutInflater.Java:513)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.Java:56)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createViewFromTag(LayoutInflater.Java:563)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:385)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:320)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:276)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.Java:198)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.Activity.setContentView(Activity.Java:1647)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.ravi.password.PasswordActivity.onCreate(PasswordActivity.Java:34)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.Instrumentation.callActivityOnCreate(Instrumentation.Java:1047)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.performLaunchActivity(ActivityThread.Java:2627)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 12 more
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Java.lang.reflect.InvocationTargetException
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.widget.LinearLayout.<init>(LinearLayout.Java:115)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Constructor.constructNative(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Constructor.newInstance(Constructor.Java:446)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createView(LayoutInflater.Java:500)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 22 more
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Java.lang.OutOfMemoryError: bitmap size exceeds VM budget
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.nativeCreate(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createBitmap(Bitmap.Java:468)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createBitmap(Bitmap.Java:435)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createScaledBitmap(Bitmap.Java:340)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.finishDecode(BitmapFactory.Java:488)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.decodeStream(BitmapFactory.Java:462)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.Java:323)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.ViewGroup.<init>(ViewGroup.Java:285)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 26 more
画像のサイズは約5kbです。
実行時に、Android必要に応じて(画面のサイズと解像度に基づいて)画像のサイズを変更します。内部的にサイズ変更を行うためにビットマップを使用します。このような問題を修正する簡単な方法の1つは、すべての描画可能ファイルをdrawable-ldpi、mdpi、hdpiフォルダーにコピーすることです。この方法Androidはこれらのフォルダーからファイルを取得するサイズを変更しません。
そのランダムな種類の例外、修正する本当の痛み。
背景画像のサイズに従ってください
対応デバイス用
LDPI:
Portrait: 200x320px
Landscape: 320x200px
MDPI:
Portrait: 320x480px
Landscape: 480x320px
HDPI:
Portrait: 480x800px
Landscape: 800x480px
XHDPI:
Portrait: 720px1280px
Landscape: 1280x720px